How to mark a theoretical waterline even if the boat is not sitting level...

Closed Captions (CC):
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well it's a hot and sticky day and we

are

trying to mark the water line

i'd say like that because obviously

you're working from there from the

designer's drawings

to get the water line but where it

should actually float is anybody's guess

really so

um it's an approximate water line for

the time being at some stage with dunker

in the water and mark the

actual proper water line but based on

the designers drawings and table of

offsets we're marking this out

and uh trying to do it old school so

i've got a laser

pointer which probably makes the job

easier but but nonetheless you know

laser pointers are fairly new laser

markers so old school

set up the three meter level at the

waterline level

and on the level at that end at the

other end

we've also got a straight edge set up

and and the technique is to run a line

from the top of that one

all the way up over the top of the level

at the other end

and position it so that it nearly

touches the boat

so it's out wired at the far end in

close at the near end

or vice versa moving that around there

so it only nearly touches the boat and

then marking with a pencil where it

comes

to as soon as you touch the boat with

the line

it attempts to do a great circle route

and dips down

um so it's got to be just as close to

the boat as you can get it without

actually touching it and then you can

get an accurate marking

and then we've just

well the next step actually was for me

to kneel down an eye

up lining up this level with the level

at the end

and karen stood over that with a pencil

marked just to check how markings were

correct

then we've gone around with a bendy

button joining the markings up

and again with the bendy button it's

important that you don't lay it

against the hull like that because then

it starts doing the great circle again

you've got to keep the batten

upright basically speaking so it doesn't

curve too much

to get line but finally on the port side

there we've got a line we're happy with

and uh yeah it looks good let's get some

masking tape around very soon

when you look at it it looks very high

but and first of all

i was quite concerned about that um

over the years i've gathered a

collection of pictures of been for door

reason

i've got those out and looked at their

water lines and it seems

this is about right this is the way they

are so i'm confident that

my calculations and and what we've done

uh roughly right at least

and obviously as i say it's an

approximate water line got a dunker in

the water to get the true water line

but looking good so far

choice

so let's this is the starboard side

just think about that the starter side

and try and give you a bit more detail

of the set up here so

as you can tell we've got the trimming

the level set up here

on the waterline mark on the bow set at

the same

rough level that the boat is sat at

which is almost level

and uh clamp there i've got my bit of

fishing line

clamped on there let's just move that

around so it's not disturbing it

put a fishing line clamp on there and it

runs up to the other end

we'll wand up the other end and show you

that please excuse the darkness up in

that back corner

so you see the straight edge positioned

also on the waterline mark on the aft

end

and coming out there and as you can see

i

possibly see it's been officialized it's

going to be different

it's clamped onto our straightness now

the basic principle is that these are

these are

levels four and a half there and

wherever we clamp that line

it's going to give us a level mark

between those two

so we clamp it in a position where it's

nearly touching the hull

and can then mark the hull so i should

now wander back to midships and mark the

hull

so this is their line

and you'll see this it's just literally

just touching the hole you probably

can't see that well

but what we can do we can mark

in a few places where that is touching

now or

just about to touch the heart and

the light in here isn't the best let's

be honest

there's a degree of inaccuracy involved

let's not

kid ourselves come back here where

that's still still pretty close

there i think i should come back

your way through one more that one is so

let's swing this one in a bit closer to

there

and i've got the other end and put it

tight

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nearly touching now

that's good that's good please with that

that's better

all right now that should be right there

if i can get a pencil up there

that's a good spot there

right there look at that so

get the button on that at the end or two

of us

so what we've just done then is just to

check those marks is that i've eyed

between this forward level and the back

level which you probably can't see on

the camera

in fact i get down i'm now but for my

eye at the very least on that level now

and karen holds the pencil against the

boat

and assuming both those levels are in

line that pencil should be on the line

and we've worked back as far as we can

see

doing that and just checked most of the

marks we made with the with the piece of

fishing line were correct one or two

we've adjusted by a few millimeters

but now we're happy with all those marks

we're now

going to work around it with a batten

and draw a line around

that there

do the rest of that

oh it's getting very dark isn't it

okay so here we go

that's it for this week thanks for

watching um one thing you can do for me

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that'll be marvelous and

thumbs up and thank you for watching

see you next week bye

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taking it in a new day

has begun

still going steady

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as the day got brighter

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no one can stop her

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sundown

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